Optimus
Optimus was a private-label brand used by RadioShack for decades, offering a range of audio gear like receivers, speakers, and keyboards, often rebranded from established manufacturers. Known for solid performance and accessible design, these products were popular among hobbyists and entry-level users. Some Optimus-branded musical instruments, like the Concertmate keyboards, remain sought after for their vintage appeal.
One-of-a-kind gear lands every week. Browse the latest arrivals while they’re still available.
Every preloved piece is serviced, repaired if needed, and tested by our techs before it goes on sale, with a warranty.